Wrist-detection on the Apple Watch is supposed to ensure that it will ask for the passcode if removed from your wrist, but as a YouTube video posted by iDownloadBlog demonstrates, a thief is able to reset the watch without having to enter the passcode. They are then free to pair it with any other iPhone.

iPhones are protected by Activation Lock, which means that even if a thief performs a hard reset of the phone, it cannot be reactivated without the original owner’s Apple ID and password. The Apple Watch, however, has no such protection, and does not require a passcode to wipe it – as shown in the video below … expand full story